Unwinding equipment for core-spun yarn production and use method of unwinding equipment

Abstract

The invention belongs to the field of yarn carrying equipment, and particularly relates to equipment for unfolding or releasing yarn materials, in particular to backing-off equipment for core spun yarn production and a using method thereof.The backing-off equipment for core spun yarn production comprises a support body; an unwinding assembly; a lead plate; the unwinding assembly comprises an unwinding drum, a winding drum, a winding drum, a winding drum and a winding drum, and the elastic unwinding piece is arranged on the bracket body. By arranging the elastic backing-off piece, the elastic backing-off piece can adapt to thickness fluctuation of the covering yarn in real time in the backing-off process, meanwhile, when the covering yarn is locally thickened due to elastic deformation or the yarn connector is subjected to backing-off, the problem that in the related technology, the covering yarn is clamped due to rigid clamping can be avoided, and when the covering yarn recovers to the original shape, the covering yarn can be prevented from being damaged. And the elastic backing-off piece recovers deformation, so that the stability of a backing-off yarn path is ensured.

Description

Technical Field

[0001] The present invention belongs to the field of equipment for handling yarns, and specifically relates to equipment for unwinding or paying out yarn materials, and particularly relates to a unwinding device for core-spun yarn production and its using method. Background Art

[0002] During the production process of core-spun yarn, the unwinding process is a key link affecting the quality and production efficiency of the yarn.

[0003] The unwinding devices in the related technologies generally adopt a rigid yarn guiding structure. When unwinding high-elastic core-spun yarns (that is, the core yarn of the core-spun yarn is a highly elastic filament, such as spandex), due to the stress concentration that is likely to occur during the unwinding process of the yarn (generated when the core yarn of the core-spun yarn rebounds), winding and jamming phenomena occur between the yarn layers. Especially when the yarn bobbin rotates at a high speed for unwinding, the unwinding disc with a fixed gap cannot effectively adapt to the thickness fluctuation of the core-spun yarn, often causing the yarn to be embedded in the gap and then squeezed and deformed by mechanical components, and even causing yarn breakage in severe cases.

[0004] Therefore, how to avoid the easy occurrence of yarn breakage during the unwinding of high-elastic core-spun yarn is a technical problem to be urgently solved at present.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of the present application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide an unwinding device for core-spun yarn production and its using method.

[0007] In a first aspect, the embodiments of the present disclosure provide an unwinding device for core-spun yarn production, including: A support body; An unwinding assembly, which is arranged on the support body and is used for unwinding the core-spun yarn; A wire guiding plate, which is arranged on the side of the support body and is used for guiding and sending out the unwound core-spun yarn; Wherein, the unwinding assembly includes: A yarn unwinding reel, which is arranged on the support body; An elastic unwinding member, which is arranged on the support body; During unwinding, the core-spun yarn roll is sleeved on the yarn unwinding reel by an external force, and after inserting the yarn end into the elastic unwinding member, the core-spun yarn is pulled out from the wire outlet of the wire guiding plate by an external take-up reel for winding, thus completing the unwinding of the core-spun yarn.

[0008] In an optional embodiment, the elastic unwinding member includes: A bottom plate, which is arranged on the support body; The first unwinding shaft, which is arranged on the bottom plate; The first unwinding disk, which is sleeved on the first unwinding shaft and is arranged close to the bottom plate; The extrusion disk, which is sleeved on the first unwinding shaft and is elastically connected to the top of the first unwinding shaft through a return spring. The extrusion disk is close to the first unwinding disk under the action of the return spring, and a gap for inserting the end of the core-spun yarn is formed between the extrusion disk and the first unwinding disk.

[0009] In an optional embodiment, the height of the gap between the first unwinding disk and the extrusion disk is H1; The wire diameter of the core-spun yarn is H2; Wherein, H1 < H2, and the units of H1 and H2 are mm.

[0010] In an optional embodiment, the first unwinding disk includes: The first disk body; A plurality of first arc-shaped parts, and the plurality of first arc-shaped parts are arranged along the circumferential direction of the first disk body; During unwinding, the core-spun yarn pulls the first unwinding disk to rotate, thereby driving the first arc-shaped part to rotate around the first unwinding shaft to form an air flow for dissipating heat from the core-spun yarn.

[0011] In an optional embodiment, the elastic unwinding member further includes: The second unwinding shaft, which is arranged on the bottom plate; The second unwinding disk, which is sleeved on the second unwinding shaft and is arranged close to the bottom plate.

[0012] In an optional embodiment, the second unwinding disk includes: The second disk body; A plurality of second arc-shaped parts, and the plurality of second arc-shaped parts are arranged along the circumferential direction of the second disk body; During unwinding, the core-spun yarn pulls the second unwinding disk to rotate, thereby driving the second arc-shaped part to rotate around the second unwinding shaft to form an air flow for dissipating heat from the core-spun yarn.

[0013] In an optional embodiment, the elastic unwinding member further includes: The guiding shaft; The guiding shaft is arranged on the bottom plate and is located between the first unwinding shaft and the second unwinding shaft; Wherein, the axes of the first unwinding shaft, the second unwinding shaft and the guiding shaft are parallel to each other.

[0014] In an optional embodiment, the bottom plate is provided with an adjustment groove; After the first unwinding shaft and the second unwinding shaft pass through the corresponding adjustment slots, they are fixed to the bottom plate by nuts.

[0015] In an alternative embodiment, the number of unwinding assemblies is multiple; The multiple unwinding assemblies are arranged in an array along the height direction and the length direction of the bracket body; The number of wire guide plates is multiple; Each wire guide plate is provided with a plurality of wire outlet openings.

[0016] In a second aspect, an embodiment of the present disclosure further provides a usage method for an unwinding device for core-spun yarn production as described above. The usage method includes: Sleeving a yarn roll on a pay-off reel; Inserting the end of the core-spun yarn into the elastic unwinding member by an external force and pulling it out from the wire outlet opening of the wire guide plate; An external take-up reel pulls the core-spun yarn, and the core-spun yarn is unwound through the elastic unwinding assembly.

[0017] The beneficial effect of the present invention is that the unwinding device for core-spun yarn production of the present invention can adapt to the thickness fluctuation of the core-spun yarn in real time during the unwinding process by setting the elastic unwinding member. At the same time, when the core-spun yarn is locally thickened due to elastic deformation or when the yarn joint is being unwound, the problem that the core-spun yarn is rigidly clamped and jammed in the related art can be avoided. When the core-spun yarn returns to its original state, the elastic unwinding member recovers its deformation, ensuring the stability of the unwinding yarn path.

[0018] Other features and advantages of the present invention will be described in the following specification, and some of them will become obvious from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0019] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of an unwinding device for core-spun yarn production provided by an embodiment of the present disclosure; Figure 2 ForFigure 1 Enlarged view of part A Figure 3 Schematic structural diagram of the elastic unwinding member provided by the embodiment of the present disclosure Figure 4 Top view of the elastic unwinding member provided by the embodiment of the present disclosure Figure 5 Cross-sectional view of the elastic unwinding member provided by the embodiment of the present disclosure Figure 6 Cross-sectional view of the elastic unwinding member from another perspective provided by the embodiment of the present disclosure Figure 7 Flowchart of the usage method of the unwinding device for core-spun yarn production provided by the embodiment of the present disclosure

[0022] In the figure: 100, support body; 200, unwinding assembly; 210, winding reel; 220, elastic unwinding member; 221, bottom plate; 222, first unwinding shaft; 2221, return spring; 223, first unwinding disc; 2231, first disc body; 2232, first arc portion; 224, extrusion disc; 225, second unwinding shaft; 226, second unwinding disc; 2261, second disc body; 2262, second arc portion; 227, guiding shaft; 228, adjustment slot; 229, nut; 300, wire guiding plate; 310, wire outlet Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention

[0024] In this document, when it is mentioned that the first component is located on the second component, this may mean that the first component can be directly formed on the second component, or a third component can be inserted between the first component and the second component. In addition, in the drawings, for the effective description of the technical content, the thickness of the components may be exaggerated or reduced

[0025] In this document, when an element or layer is referred to as being "on," "joined to," "connected to," "attached to," or "coupled to" another element or layer, it can be directly on, joined, connected, attached, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly joined to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] In this document, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terms used herein are for the purpose of describing particular example configurations only and are not intended to be limiting. As used herein, the singular articles "a," "an," and "the" may also be intended to include the plural forms, unless clearly stated otherwise herein. The terms "comprises," "comprising," and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the particular order discussed or illustrated, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

[0028] As used herein, phrases such as "in one embodiment," "according to one embodiment," "in some embodiments," etc. generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," etc. are used "as an example, instance, or illustration." Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of the terms "example," "exemplary," etc. is intended to present concepts in a concrete manner.

[0029] It has been found through research that the unwinding structures in related technologies have poor adaptability to different specifications of yarns. Especially for yarns whose thickness changes due to changes in elasticity during unwinding, the core-spun yarn gets stuck on the unwinding structure, resulting in broken wires. There is a lack of a heat dissipation mechanism during the unwinding process. During high-speed unwinding, the yarn heats up due to friction, easily causing the outer fibers to melt and stick together. When multiple yarn positions are unwound synchronously, there is a lack of air flow guidance and cooperation between the unwinding units, which is not conducive to heat dissipation.

[0030] Based on the above research, the embodiments of the present disclosure provide an unwinding device for core-spun yarn production and its usage method. It is targeted at high-elasticity core-spun yarns, which are simply referred to as core-spun yarns in this embodiment. Specifically, the return spring of the elastic unwinding assembly 200 adaptively adjusts the gap between the first unwinding disk and the extrusion disk, thereby adaptively adjusting the wire diameter to avoid jamming. At the same time, a turbulator structure is added, and an arc portion is provided on the unwinding disk. When the unwinding disk rotates, it can disturb the air flow and accelerate the heat dissipation of the core-spun yarn.

[0031] Regarding the defects existing in the above solutions, they are all the results obtained by the inventors through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article for the above problems should all be the contributions made by the inventors to the present disclosure during the process of the present disclosure.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] Please refer to Figure 1 and Figure 2 At least one embodiment provides an unwinding device for core-spun yarn production, including: a bracket body 100; an unwinding assembly 200, which is arranged on the bracket body 100 and is used for unwinding the core-spun yarn; a wire guiding plate 300, which is arranged on the side of the bracket body 100 and is used for guiding and sending out the unwound core-spun yarn; wherein, the unwinding assembly 200 includes: a winding drum 210, which is arranged on the bracket body 100; an elastic unwinding member 220, which is arranged on the bracket body 100; during unwinding, the core-spun yarn roll is sleeved on the winding drum 210 by an external force, and after inserting the thread end into the elastic unwinding member 220, the core-spun yarn is pulled out from the wire outlet 310 of the wire guiding plate 300 by an external winding drum for winding, thus completing the unwinding of the core-spun yarn.

[0035] Among them, the running path of the core-spun yarn is as Figure 2As shown by the dashed line in the figure, an external force is manually provided to sleevethe core-spun yarn roll on the unwinding reel 210, pull out the yarn end from the elastic unwinding member 220, wind it around the external winding reel, and then drive the core-spun yarn to unwind by winding the winding reel.

[0036] By providing the elastic unwinding member 220, the thickness fluctuation of the core-spun yarn can be adapted in real time during the unwinding process. At the same time, when the core-spun yarn is locally thickened due to elastic deformation or when the yarn joint is unwound, the problem that the core-spun yarn is rigidly clamped and jammed in the related art can be avoided. When the core-spun yarn returns to its original state, the elastic unwinding member 220 returns to its deformed state to ensure the stability of the unwinding yarn path.

[0037] Please refer to Figure 2 and Figure 3 As shown in the figure, the elastic unwinding member 220 includes: a bottom plate 221 provided on the bracket body 100; a first unwinding shaft 222 provided on the bottom plate 221; a first unwinding disc 223 sleeved on the first unwinding shaft 222 and close to the bottom plate 221; a pressing disc 224 sleeved on the first unwinding shaft 222 and elastically connected to the top of the first unwinding shaft 222 through a return spring 2221. The pressing disc 224 approaches the first unwinding disc 223 under the action of the return spring 2221 and forms a gap for inserting the yarn end of the core-spun yarn with the first unwinding disc 223.

[0038] The dynamic gap formed by the cooperation of the pressing disc 224 and the return spring 2221 is used to adapt to the change of the core-spun yarn diameter, avoid the core-spun yarn being clamped and jammed, especially when unwinding at the joint of the core-spun yarn, the jamming can be avoided to the greatest extent and the probability of yarn breakage can be reduced.

[0039] Specifically, the height of the gap between the first unwinding disc 223 and the pressing disc 224 is H1; the core-spun yarn diameter is H2; where H1 < H2, and the units of H1 and H2 are mm.

[0040] Please refer to Figure 3 and Figure 4 As shown in the figure, the first unwinding disc 223 includes: a first disc body 2231; a plurality of first arc portions 2232 arranged along the circumferential direction of the first disc body 2231; when unwinding, the core-spun yarn drives the first unwinding disc 223 to rotate, so as to drive the first arc portions 2232 to rotate around the first unwinding shaft 222 to form an air flow for cooling the core-spun yarn.

[0041] Among them, the running path of the core-spun yarn is as shown in Figure 4As shown by the dashed line in the figure, when the core-spun yarn is pulled for unwinding, the core-spun yarn rubs against the first unwinding disc 223, driving the first unwinding disc 223 to rotate. As a result, the first arc portion 2232 rotates, forming a directional air flow, increasing the air flow at the gap, and further dissipating heat from the core-spun yarn.

[0042] Please continue to refer to Figure 3 and Figure 4 , in a preferred embodiment, the elastic unwinding member 220 further includes: a second unwinding shaft 225, which is disposed on the bottom plate 221; a second unwinding disc 226, which is sleeved on the second unwinding shaft 225 and is disposed close to the bottom plate 221.

[0043] Wherein, the second unwinding disc 226 includes: a second disc body 2261; a plurality of second arc portions 2262, and the plurality of second arc portions 2262 are arranged along the circumferential direction of the second disc body 2261; during unwinding, the core-spun yarn pulls the second unwinding disc 226 to rotate, thereby driving the second arc portion 2262 to rotate around the second unwinding shaft 225 to form an air flow and dissipate heat from the core-spun yarn.

[0044] The core-spun yarn is secondarily cooled by the second unwinding disc 226, further reducing the temperature on the surface of the core-spun yarn.

[0045] Please continue to refer to Figure 3 and Figure 4 , the elastic unwinding member 220 further includes: a guiding shaft 227; the guiding shaft 227 is disposed on the bottom plate 221 and is located between the first unwinding shaft 222 and the second unwinding shaft 225; wherein, the axes of the first unwinding shaft 222, the second unwinding shaft 225, and the guiding shaft 227 are parallel to each other. The tension during the unwinding of the core-spun yarn is adjusted by the guiding shaft 227.

[0046] Specifically, the bottom plate 221 is provided with an adjusting groove 228; after the first unwinding shaft 222 and the second unwinding shaft 225 pass through the corresponding adjusting grooves 228, they are fixed on the bottom plate 221 by nuts 229.

[0047] Among them, the structural schematic diagram of the first unwinding shaft 222 after installation is as shown in Figure 5 shown, and the structural schematic diagram of the second unwinding shaft 225 after installation is as shown in Figure 6 shown.

[0048] Please refer to Figure 1 , in a preferred embodiment, the number of the unwinding assemblies 200 is multiple; the multiple unwinding assemblies 200 are arranged in an array along the height direction and the length direction of the bracket body 100; the number of the wire guiding plates 300 is multiple; and each wire guiding plate 300 is provided with a plurality of wire outlet openings 310.

[0049] Please refer to Figure 7 , at least one embodiment further provides a usage method for a unwinding device for producing core-spun yarn as described above, and the usage method includes: S110: Sleeving the yarn roll on the unwinding cylinder 210; S120: Inserting the end of the core-spun yarn into the elastic unwinding member 220 by an external force and pulling it out from the wire outlet 310 of the wire guiding plate 300; S130: Pulling the core-spun yarn by an external take-up cylinder, and unwinding the core-spun yarn through the elastic unwinding assembly 200.

[0050] In summary, the present invention provides an unwinding device for producing core-spun yarn, including: a bracket body 100; an unwinding assembly 200, which is arranged on the bracket body 100 and is used for unwinding the core-spun yarn; a wire guiding plate 300, which is arranged on the side of the bracket body 100 and is used for guiding and sending out the unwound core-spun yarn; wherein, the unwinding assembly 200 includes: an unwinding cylinder 210, which is arranged on the bracket body 100; an elastic unwinding member 220, which is arranged on the bracket body 100; during unwinding, the core-spun yarn roll is sleeved on the unwinding cylinder 210 by an external force, and after the end is inserted into the elastic unwinding member 220, the core-spun yarn is pulled out from the wire outlet 310 of the wire guiding plate 300 by an external take-up cylinder for winding, and the unwinding of the core-spun yarn is completed. By providing the elastic unwinding member 220, the thickness fluctuation of the core-spun yarn can be adapted in real time during the unwinding process. At the same time, when the core-spun yarn is locally thickened due to elastic deformation or when the yarn joint is being unwound, the problem that the core-spun yarn is rigidly clamped and jammed in the related art can be avoided. When the core-spun yarn returns to its original state, the elastic unwinding member 220 returns to its deformed state, ensuring the stability of the unwinding yarn path.

[0051] Inspired by the above ideal embodiments according to the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A unwinding device for core-spun yarn production, characterized in that, Including: Bracket body (100); Unwinding component (200), which is arranged on the bracket body (100) and is used for unwinding the core-spun yarn; Wire guiding plate (300), which is arranged on the side of the bracket body (100) and is used for guiding and sending out the unwound core-spun yarn; Wherein, the unwinding component (200) includes: Pay-off reel (210), which is arranged on the bracket body (100); Elastic unwinding member (220), which is arranged on the bracket body (100); During unwinding, the core-spun yarn roll is sleeved on the pay-off reel (210) by an external force, and after inserting the yarn end into the elastic unwinding member (220), the core-spun yarn is pulled out from the wire outlet (310) of the wire guiding plate (300) by an external take-up reel for winding, thereby completing the unwinding of the core-spun yarn.

2. The unwinding device for core-spun yarn production according to claim 1, wherein The elastic unwinding member (220) includes: Base plate (221), which is arranged on the bracket body (100); First unwinding shaft (222), which is arranged on the base plate (221); First unwinding disk (223), which is sleeved on the first unwinding shaft (222) and is arranged close to the base plate (221); Extrusion disk (224), which is sleeved on the first unwinding shaft (222) and is elastically connected to the top of the first unwinding shaft (222) through a return spring (2221). The extrusion disk (224) is close to the first unwinding disk (223) under the action of the return spring (2221) and forms a gap for inserting the yarn end of the core-spun yarn with the first unwinding disk (223).

3. The unwinding device for core-spun yarn production according to claim 2, wherein The height of the gap between the first unwinding disk (223) and the extrusion disk (224) is H1; The yarn diameter of the core-spun yarn is H2; Wherein, H1 < H2, and the units of H1 and H2 are mm.

4. The unwinding device for core-spun yarn production according to claim 2, wherein The first unwinding disk (223) includes; First disk body (2231); Multiple first arc portions (2232), and the multiple first arc portions (2232) are arranged along the circumferential direction of the first disk body (2231); During unwinding, the core-spun yarn pulls the first unwinding disk (223) to rotate, thereby driving the first arc portions (2232) to rotate around the first unwinding shaft (222) to form an air flow for dissipating heat from the core-spun yarn.

5. The unwinding device for core-spun yarn production according to claim 2, wherein The elastic unwinding member (220) further includes: Second unwinding shaft (225), which is arranged on the base plate (221); Second unwinding disk (226), which is sleeved on the second unwinding shaft (225) and is arranged close to the base plate (221).

6. The unwinding device for core-spun yarn production according to claim 5, wherein The second unwinding disk (226) includes: Second disk body (2261); a plurality of second arc portions (2262), and the plurality of second arc portions (2262) are arranged along the circumferential direction of the second disc body (2261); During unwinding, the core-spun yarn pulls the second unwinding disc (226) to rotate, thereby driving the second arc portion (2262) to rotate around the second unwinding axis (225) to form an air flow for dissipating heat from the core-spun yarn.

7. The unwinding device for core-spun yarn production according to claim 5, wherein the elastic unwinding member (220) further includes: a guiding shaft (227); the guiding shaft (227) is arranged on the bottom plate (221) and is located between the first unwinding axis (222) and the second unwinding axis (225); wherein, the axes of the first unwinding axis (222), the second unwinding axis (225) and the guiding shaft (227) are parallel to each other.

8. The unwinding device for core-spun yarn production according to claim 2, wherein the bottom plate (221) is provided with an adjustment groove (228); after the first unwinding axis (222) and the second unwinding axis (225) pass through the corresponding adjustment grooves (228), they are fixed to the bottom plate (221) by nuts (229).

9. The unwinding device for core-spun yarn production according to claim 1, wherein the number of the unwinding assemblies (200) is multiple; the multiple unwinding assemblies (200) are arranged in an array along the height direction and the length direction of the bracket body (100); the number of the wire guiding plates (300) is multiple; each wire guiding plate (300) is provided with a plurality of wire outlet openings (310).

10. A method of using a unwinding device for core-spun yarn production as described in claim 1, characterized in that, Comprising: sleeving the yarn roll on the unwinding cylinder (210); inserting the end of the core-spun yarn into the elastic unwinding member (220) by an external force and pulling it out from the wire outlet opening (310) of the wire guiding plate (300); an external winding cylinder pulls the core-spun yarn, and the core-spun yarn is unwound by the elastic unwinding assembly (200).

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